EP0156733A2 - Electric knife, especially for cleaving oysters - Google Patents

Electric knife, especially for cleaving oysters Download PDF

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Publication number
EP0156733A2
EP0156733A2 EP85400558A EP85400558A EP0156733A2 EP 0156733 A2 EP0156733 A2 EP 0156733A2 EP 85400558 A EP85400558 A EP 85400558A EP 85400558 A EP85400558 A EP 85400558A EP 0156733 A2 EP0156733 A2 EP 0156733A2
Authority
EP
European Patent Office
Prior art keywords
blade
plunger
housing
induction coil
counterweight
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP85400558A
Other languages
German (de)
French (fr)
Other versions
EP0156733A3 (en
Inventor
Alain Gilbert
Jacques Gilbert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Norlac Plastiques SA
NORLAC PLASTIQUES
Original Assignee
Norlac Plastiques SA
NORLAC PLASTIQUES
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Norlac Plastiques SA, NORLAC PLASTIQUES filed Critical Norlac Plastiques SA
Publication of EP0156733A2 publication Critical patent/EP0156733A2/en
Publication of EP0156733A3 publication Critical patent/EP0156733A3/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G21/00—Table-ware
    • A47G21/06—Combined or separable sets of table-service utensils; Oyster knives with openers; Fish servers with means for removing bones
    • A47G21/061—Oyster knives with openers; Shellfish openers
    • A47G21/062—Oyster splitters working by forcing a knife or the like between shells
    • A47G21/065—Hand tools, e.g. shucking knives
    • A47G21/066—Hand tools, e.g. shucking knives electrically operated

Definitions

  • the present invention relates to an electric knife intended in particular for opening oysters, and more particularly such a knife of the type comprising a shoemaker, a blade capable of sliding in its longitudinal direction between an extended position relative to the housing and a retracted position by relative to the housing, and an induction coil mounted on the housing and arranged to vibrate the blade between its two positions.
  • the present invention aims to overcome this drawback.
  • the subject of the invention is a. electric knife intended in particular for the opening of oysters, of the type comprising a housing, a blade capable of sliding in its longitudinal direction between an extended position relative to the housing and a retracted position relative to the housing, and a mounted induction coil on the housing and arranged to vibrate the blade between its two positions, characterized in that it comprises a plunger disposed in said induction coil and a counterweight secured to the plunger, said counterweight being capable of performing movements of va -and comes under the action of the induction coil and to exert shocks on the blade when the latter is in the retracted position.
  • the knife according to the invention comprises means for supplying alternating current, rectifying means for supplying the induction coil with alternation in two of said alternating current so as to attract the plunger into a first direction during said alternation, and first elastic means for bringing the plunger in the other direction during the other alternation.
  • the rectifier means and the first elastic means are for example arranged so that said shocks are exervices on the blade when the plunger returns in the other direction under the former of said first elastic means.
  • shocks are consequently exerted by the counterweight under the impulse provided by the first elastic means, the stiffness of which can be easily chosen so as to impart to the counterweight a suitable inertia.
  • the knife according to the invention comprises second elastic means tending to return said blade to its extended position.
  • the counterweight is made of a non-magnetic material or is separated from the plunger by an element made of a non-magnetic material.
  • This knife has a housing 1 inside which is arranged an induction coil 2 crossed by a guide rod 3 carrying in its central part a plunger 4 and at one of its ends, located on the side of the knife 5, a counterweight 6 made of a non-magnetic material.
  • the induction coil is supplied with alternating current from a power cord 7 via a diode 8.
  • This alternation is chosen in the present case in such a way that, when the coil is energized, the plunger is drawn to the side opposite the knife 5 in the position shown in phantom.
  • a compression spring 9 is disposed between a shoulder 10 of the housing 1, and the counterweight 6, to exert a force on the counterweight in the direction of the knife 5. that is to say that the force exerted by the spring 9 is antagonistic to the electromagnetic forces exerted by the coil on the plunger 4.
  • the coil 2 is placed axially in the case 1 so that the spring 8 is in its compressed position when the plunger is at inside the coil, that is, when the electromagnetic forces have a maximum value.
  • the knife 5 has at its interior part of the housing 1 a heel 11 guided in a cavity 12 of the housing.
  • Compression springs 13 are arranged between the heel 11 and a shoulder 14 of the housing to exert on the knife 5 an effort directed towards the outside, that is to say that they tend to put the knife 5 in s ? extended position relative to the housing, shown in solid lines in their drawings and in which abutment surfaces 15 and 16 of the heel 11 and of the housing 1 respectively are in contact.
  • the knife 5 can slide relative to the housing 1 against the action of the springs 13, from this extended position shown in solid lines to a retracted position in the housing shown in broken lines.
  • a thrust washer 17 is mounted integral with the rod 3 between the counterweight 6 and the plunger 4 to come into contact with a shoulder 18 of the housing 1 in order to prevent the counterweight from coming to exert impacts on the blade 5 when the latter is in this extended position.
  • the blade 5 sinks towards its retracted position where it receives the shocks exerted by the counterweight 6.
  • shocks originate from the back-and-forth movement to which the assembly constituted by the rod 3, the plunger 4, and the counterweight 6 is subjected, under the effect of the electromagnetic forces caused by the induction coil 2 during alternating supply current, and elastic forces caused by the spring 9 during the other alternation.
  • the impact of the counterweight 6 on the heel 11 of the blade could be caused by the electromagnetic forces and the return movement by a spring.

Landscapes

  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Processing Of Meat And Fish (AREA)
  • Knives (AREA)

Abstract

Knife of the type comprising a casing (1), a blade (5) capable of sliding in its longitudinal direction between an extended position relative to the casing and a retracted position relative to the casing, and an induction coil (2) mounted on the casing and arranged so as to cause the blade to vibrate between its two positions. It comprises a plunger (4) disposed in the said induction coil and a small weight (6) integral with the plunger, the said weight being capable of performing to-and-fro movements through the action of the induction coil and of impacting shocks on the blade when the latter is in the retracted position. <IMAGE>

Description

La présente invention concerne un couteau électrique destiné notamment 5 l'ouverture des huitres, et plus particulièrement un tel couteau du type comprenant un bottier, une lame susceptible de coulisser dans sa direction longitudinale entre une position sortie par rapport au boîtier et une position rentrée par rapport au boîtier, et une bobine d'induction montée sur le boîtier et agencée pour faire vibrer la lame entre ses deux positions.The present invention relates to an electric knife intended in particular for opening oysters, and more particularly such a knife of the type comprising a shoemaker, a blade capable of sliding in its longitudinal direction between an extended position relative to the housing and a retracted position by relative to the housing, and an induction coil mounted on the housing and arranged to vibrate the blade between its two positions.

De tels appareils sont déjà connus dans la technique. Ils permettent, du fait des vibrations de la lame, d'introduire cette dernière plus aisément entre les deux valves du coquillage et ainsi de faciliter son ouverture.Such devices are already known in the art. They allow, due to the vibrations of the blade, to introduce the latter more easily between the two valves of the shell and thus facilitate its opening.

Ces appareils connus présentent toutefois l'inconvénient de manquer généralement de puissance et d'être par conséquent relativement peu fiables.These known devices however have the disadvantage of generally lacking in power and therefore being relatively unreliable.

La présente invention vise à pallier cet inconvénient.The present invention aims to overcome this drawback.

A cet effet, l'invention a pour objet un. couteau électrique destiné notamment à l'ouverture des huitres, du type comprenant un boîtier, une lame susceptible de coulisser dans sa direction longitudinale entre une position sortie par rapport au boîtier et une position rentrée par rapport au boîtier, et une bobine d'induction montée sur le boîtier et agencée pour faire vibrer la lame entre ses deux positions, caractérisé par le fait qu'il comprend un plongeur disposé dans ladite bobine d'induction et une masselotte solidaire du plongeur, ladite masselotte étant susceptible d'effectuer des mouvements de va-et-vient sous l'action de la bobine d'induction et d'exercer des chocs sur la lame lorsque cette dernière est en position rentrée.To this end, the subject of the invention is a. electric knife intended in particular for the opening of oysters, of the type comprising a housing, a blade capable of sliding in its longitudinal direction between an extended position relative to the housing and a retracted position relative to the housing, and a mounted induction coil on the housing and arranged to vibrate the blade between its two positions, characterized in that it comprises a plunger disposed in said induction coil and a counterweight secured to the plunger, said counterweight being capable of performing movements of va -and comes under the action of the induction coil and to exert shocks on the blade when the latter is in the retracted position.

Lorsque l'utilisateur exerce sur la lame une pression longitudinale, celle-ci tend à rentrer dans le boîtier et par conséquent à venir dans une position où elle est soumise aux chocs successifs de la masselotte qui tendent au contraire à la faire sortir du boîtier.When the user exerts a longitudinal pressure on the blade, the latter tends to re-enter the housing and consequently to come into a position where it is subjected to successive shocks from the counterweight which, on the contrary, tend to cause it to come out of the housing.

Il en résulte une vibration de la lame qui facilite son utilisation. On notera en particulier que l'on bénéficie grâce à ce dispositif du phénomène d'inertie de la masselotte qui permet d'augmenter l'efficacité de la vibration de la lame.This results in a vibration of the blade which facilitates its use. Note in particular that thanks to this device the inertia phenomenon of the counterweight which allows to increase the efficiency of the vibration of the blade.

Dans un mode de réalisation particulier, le couteau selon l'invention comprend des moyens d'alimentation en courant alternatif, des moyens redresseurs pour fournir a la bobine d'induction une alternance sur deux dudit courant alternatif de manière à attirer le plongueur dans une première direction lors de ladite alternance, et des premiers moyens élastiques pour ramener le plongeur dans l'autre direction lors de l'autre alternance.In a particular embodiment, the knife according to the invention comprises means for supplying alternating current, rectifying means for supplying the induction coil with alternation in two of said alternating current so as to attract the plunger into a first direction during said alternation, and first elastic means for bringing the plunger in the other direction during the other alternation.

Les moyens redresseurs et les premiers moyens élastiques sont par exemple agencés de maniere que lesdits chocs soient exervices sur la lame lorsque le plongeur revient dans l'autre direction sous l'ancien desdits premiers moyens élastiques.The rectifier means and the first elastic means are for example arranged so that said shocks are exervices on the blade when the plunger returns in the other direction under the former of said first elastic means.

Les chocs sont par conséauent exercés par la masselotte sous l'impulsion fournie par les premiers moyens élastiques dont la raideur peut être facilement choisie de manière à impartir à la masselotte une inertie convenable.The shocks are consequently exerted by the counterweight under the impulse provided by the first elastic means, the stiffness of which can be easily chosen so as to impart to the counterweight a suitable inertia.

Avantageusement, le couteau selon l'invention comprend des seconds moyens élastiques tendant à ramener ladite lame dans sa position sortie.Advantageously, the knife according to the invention comprises second elastic means tending to return said blade to its extended position.

Ainsi, lorsqu'aucun effort n'est exercé sur la lame, celle-ci est maintenue dans sa position sortie de sorte qu'elle ne reçoit aucun choc de la part de la masselotte. Seul un effort prédéterminé permettant de vaincre l'action des seconds moyens élastiques permet de provoquer ces chocs et par conséquent les vibrations de la lame.Thus, when no force is exerted on the blade, the latter is maintained in its extended position so that it receives no shock from the counterweight. Only a predetermined effort to overcome the action of the second elastic means can cause these shocks and therefore the vibrations of the blade.

Dans un mode de réalisation préféré de l'invention, la masselotte est réalisée dans un matériau non magnétique ou est séparée du plongeur par un élément réalisé dans un matériau non magnétique.In a preferred embodiment of the invention, the counterweight is made of a non-magnetic material or is separated from the plunger by an element made of a non-magnetic material.

On évite ainsi que la masselotte ne reste collée à la lame après être venue en contact avec elle.This prevents the flyweight from sticking to the blade after coming into contact with it.

On décrira maintenant à titre d'exemple non limitatif un mode de réalisation particulier de l'invention en référence aux dessins schématiques annexés représentant une vue partielle ouverte d'un couteau électrique selon l'invention.A particular embodiment of the invention will now be described by way of nonlimiting example with reference to the appended schematic drawings showing a partial open view of an electric knife according to the invention.

Ce couteau comporte un boîtier 1 à l'intérieur duquel est disposée une bobine d'induction 2 traversée par une tige de guidage 3 portant dans sa partie centrale un plongeur 4 et à une de ses extrémités, située du côté du couteau 5, une masselotte 6 réalisée dans un matériau non magnétique.This knife has a housing 1 inside which is arranged an induction coil 2 crossed by a guide rod 3 carrying in its central part a plunger 4 and at one of its ends, located on the side of the knife 5, a counterweight 6 made of a non-magnetic material.

La bobine d'induction est alimentée en courant alternatif à partir d'un cordon d'alimentation 7 par l'intermédiaire d'une diode 8.The induction coil is supplied with alternating current from a power cord 7 via a diode 8.

Ainsi, seule une alternance sur deux du courant alternatif est transmise à la bobine 2.Thus, only one alternation in two of the alternating current is transmitted to the coil 2.

Cette alternance est choisie dans le cas présent de telle manière que, lorsque la bobine est excitée, le plongeur soit attiré du côté opposé au couteau 5 dans la position représentée en traits mixtes.This alternation is chosen in the present case in such a way that, when the coil is energized, the plunger is drawn to the side opposite the knife 5 in the position shown in phantom.

Un ressort de compression 9 est disposé entre un épaulement 10 du boîtier 1, et la masselotte 6, pour exercer un effort sur la masselotte dans la direction du couteau 5. c'est-à-dire que l'effort exercé par le ressort 9 est antagoniste aux forces électro-magnétiques exercées par la bobine sur le plongeur 4.A compression spring 9 is disposed between a shoulder 10 of the housing 1, and the counterweight 6, to exert a force on the counterweight in the direction of the knife 5. that is to say that the force exerted by the spring 9 is antagonistic to the electromagnetic forces exerted by the coil on the plunger 4.

La bobine 2 est placée axialement dans le bottier 1 de telle sorte que le ressort 8 soit dans sa position comprimée lorsque le plongeur est à l'intérieur de la bobine, c'est-à-dire, lorsque les forces électro-magnétiques ont une valeur maximale.The coil 2 is placed axially in the case 1 so that the spring 8 is in its compressed position when the plunger is at inside the coil, that is, when the electromagnetic forces have a maximum value.

Le couteau 5 comporte à sa partie intérieure au boîtier 1 un talon 11 guidé dans une cavité 12 du boîtier.The knife 5 has at its interior part of the housing 1 a heel 11 guided in a cavity 12 of the housing.

Des ressorts de compression 13 sont disposés entre le talon 11 et un épaulement 14 du boîtier pour exercer sur le couteau 5 un effort dirigé vers l'extérieur, c'est-à-dire qu'ils tendent à mettre le couteau 5 dans s? position sortie par rapport au boîtier, représentée en traits pleins eux dessins et dans laquelle des surfaces de butées 15 et 16 du talon 11 et du boitier 1 respectivement sont en contact.Compression springs 13 are arranged between the heel 11 and a shoulder 14 of the housing to exert on the knife 5 an effort directed towards the outside, that is to say that they tend to put the knife 5 in s ? extended position relative to the housing, shown in solid lines in their drawings and in which abutment surfaces 15 and 16 of the heel 11 and of the housing 1 respectively are in contact.

Le couteau 5 peut coulisser par rapport au boîtier 1 contre l'action des ressorts 13, de cette position sortie représentée en traits pleins à une position rentrée dans le boîtier représentée en traits mixtes.The knife 5 can slide relative to the housing 1 against the action of the springs 13, from this extended position shown in solid lines to a retracted position in the housing shown in broken lines.

Par conséquent, si aucune force n'est exercée sur la lame 5, celle-ci reste dans sa position sortie.Consequently, if no force is exerted on the blade 5, the latter remains in its extended position.

Une rondelle de butée 17 est montée solidaire de la tige 3 entre la masselotte 6 et le plongeur 4 pour venir en contact avec un épaulement 18 du boîtier 1 afin d'empêcher la masselotte de venir exercer des chocs sur la lame 5 lorsque cette dernière est dans cette position sortie.A thrust washer 17 is mounted integral with the rod 3 between the counterweight 6 and the plunger 4 to come into contact with a shoulder 18 of the housing 1 in order to prevent the counterweight from coming to exert impacts on the blade 5 when the latter is in this extended position.

Si un effort suffisant est exercé, la lame 5 s'enfonce vers sa position rentrée où elle reçoit les chocs exercés par la masselotte 6.If sufficient force is exerted, the blade 5 sinks towards its retracted position where it receives the shocks exerted by the counterweight 6.

Ces chocs proviennent du mouvement de va-et-vient auquel est soumis l'ensemble constitué par la tige 3, le plongeur 4, et la masselotte 6, sous l'effet des forces électro-magnétiques provoquées par la bobine d'induction 2 pendant une alternance du courant d'alimentation, et des forces élastiques provoquées par le ressort 9 pendant l'autre alternance.These shocks originate from the back-and-forth movement to which the assembly constituted by the rod 3, the plunger 4, and the counterweight 6 is subjected, under the effect of the electromagnetic forces caused by the induction coil 2 during alternating supply current, and elastic forces caused by the spring 9 during the other alternation.

Bien entendu diverses variantes et modifications peuvent être apportées au mode de réalisation décrit ci-dessus sans sortir pour autant du cadre ni de l'esprit de l'invention.Of course, various variants and modifications can be made to the embodiment described above without departing from the scope or the spirit of the invention.

C'est ainsi par exemple que le choc de la masselotte 6 sur le talon 11 de la lame pourrait être provoqué par les forces électro-magnétiques et le mouvement de retour par un ressort.Thus, for example, the impact of the counterweight 6 on the heel 11 of the blade could be caused by the electromagnetic forces and the return movement by a spring.

De même, une seule bobine a été représentée nais il va de soi que plusieurs bobines pourraient être disposées en série afin d'augmenter la force disponible.Similarly, a single coil has been shown, but it goes without saying that several coils could be arranged in series in order to increase the available force.

Claims (5)

1. Couteau électrique, destiné notamment à l'ouverture des huîtres, du type comprenant un boîtier (1), ure lame (5) susceptible de coulisser dans sa direction longitudinale entre une position sortie par rapport au boîtier et une position rentrée par rapport au boîtier, et une bobine d'induction (2) montée sur le boîtier et agencée pour faire vibrer la lame entre ses deux positions, caractérisé par le fait qu'il comprend des moyens élastiques (13: tendant à ramener ladite lame dans sa position sortie.1. Electric knife, intended in particular for the opening of oysters, of the type comprising a housing (1), a blade (5) capable of sliding in its longitudinal direction between an extended position relative to the housing and a retracted position relative to the housing, and an induction coil (2) mounted on the housing and arranged to vibrate the blade between its two positions, characterized in that it comprises elastic means (13: tending to return said blade to its extended position . 2. Couteau selon la revendication 1, caractérisé par le fait-qu'il comprend un plongeur (4) disposé dans ladite bobine d'induction et une masselotte (6) solidaire du plongeur, ladite masselotte étant susceptible d'effectuer des mouvements de va-et-vient sous l'action de la bobine d'induction et d'exercer des chocs sur la lame lorsque cette dernière est e1 position rentrée.2. Knife according to claim 1, characterized in that it comprises a plunger (4) disposed in said induction coil and a counterweight (6) integral with the plunger, said counterweight being capable of performing movements of va -and comes under the action of the induction coil and exert shocks on the blade when the latter is e 1 retracted position. 3. Couteau selon la revendication 2, caractérisé par le fait qu'i comprend des moyens d'alimentation (7) en courant alternatif, des moyen redresseurs (8) pour fournir à la bobine d'induction une alternance sur deu dudit courant alternatif de manière à attirer le plongeur dans une premièr direction lors de ladite alternance, et des moyens élastiques (9) pou ramener le plongeur dans l'autre direction lors de l'autre alternance.3. Knife according to claim 2, characterized in that i comprises means for supplying (7) with alternating current, rectifier means (8) for supplying the induction coil with alternation on two of said alternating current. so as to attract the plunger in a first direction during said alternation, and elastic means (9) to bring the plunger in the other direction during the other alternation. 4. Couteau selon la revendication 3, caractérisé par le fait qu les moyens redresseurs et les premiers moyens élastiques sont agencés d manière que lesdits chocs soient exercés sur la lame lorsque le plongeu revient dans l'autre direction sous l'action desdits premiers moyen élastiques.4. Knife according to claim 3, characterized in that the straightening means and the first elastic means are arranged so that said impacts are exerted on the blade when the plunger returns in the other direction under the action of said first elastic means . 5. Couteau selon l'une quelconque des revendications 1 à 4 caractérisé par le fait que la masselotte est réalisée dans un matériau no magnétique ou est séparée du plongeur par un élément réalisé dans un matéria non magnétique.5. Knife according to any one of claims 1 to 4 characterized in that the counterweight is made of a non-magnetic material or is separated from the plunger by an element made of a non-magnetic material.
EP85400558A 1984-03-23 1985-03-22 Electric knife, especially for cleaving oysters Withdrawn EP0156733A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8404525A FR2561566A1 (en) 1984-03-23 1984-03-23 ELECTRIC KNIFE, PARTICULARLY FOR OPENING OYSTERS
FR8404525 1984-03-23

Publications (2)

Publication Number Publication Date
EP0156733A2 true EP0156733A2 (en) 1985-10-02
EP0156733A3 EP0156733A3 (en) 1987-01-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP85400558A Withdrawn EP0156733A3 (en) 1984-03-23 1985-03-22 Electric knife, especially for cleaving oysters

Country Status (3)

Country Link
EP (1) EP0156733A3 (en)
JP (1) JPS60256337A (en)
FR (1) FR2561566A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU589759B2 (en) * 1986-04-10 1989-10-19 Norcoute-Nouvelle Distribution Francaise Knife with vibrating blade

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103283507A (en) * 2013-06-24 2013-09-11 张古权 Portable fruit tree brush cutter

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR900322A (en) * 1943-07-30 1945-06-26 Support and control frame for tools working with repeated shocks
US2391739A (en) * 1944-04-29 1945-12-25 Geronimo R Ragupos Oyster opening machine
FR1107275A (en) * 1953-06-18 1955-12-29 Metallwarenfabrik Markdorf Joh Electrically operated device for axially moving tools
FR1294842A (en) * 1961-04-19 1962-06-01 Method of opening molluscs or shellfish with valves and apparatus for its implementation and which can also be used as can opener
FR1467152A (en) * 1965-12-14 1967-01-27 Household knife with vibrating blade
FR1587709A (en) * 1968-09-06 1970-03-27
FR2480103A1 (en) * 1980-04-15 1981-10-16 Escoute Bernard Electric opener for bivalve shellfish using oscillating needle - uses AC electromagnet working against spring to oscillate longitudinally needle which penetrates between halves of shell

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR900322A (en) * 1943-07-30 1945-06-26 Support and control frame for tools working with repeated shocks
US2391739A (en) * 1944-04-29 1945-12-25 Geronimo R Ragupos Oyster opening machine
FR1107275A (en) * 1953-06-18 1955-12-29 Metallwarenfabrik Markdorf Joh Electrically operated device for axially moving tools
FR1294842A (en) * 1961-04-19 1962-06-01 Method of opening molluscs or shellfish with valves and apparatus for its implementation and which can also be used as can opener
FR1467152A (en) * 1965-12-14 1967-01-27 Household knife with vibrating blade
FR1587709A (en) * 1968-09-06 1970-03-27
FR2480103A1 (en) * 1980-04-15 1981-10-16 Escoute Bernard Electric opener for bivalve shellfish using oscillating needle - uses AC electromagnet working against spring to oscillate longitudinally needle which penetrates between halves of shell

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU589759B2 (en) * 1986-04-10 1989-10-19 Norcoute-Nouvelle Distribution Francaise Knife with vibrating blade

Also Published As

Publication number Publication date
FR2561566A1 (en) 1985-09-27
EP0156733A3 (en) 1987-01-28
JPS60256337A (en) 1985-12-18

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